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Penile length measurement standards

The standardization of penile length measurement techniques in clinical practice, specifically bone-pressed erect length (BPEL) and stretched penile length (SPL), and the importance of minimizing measurement error for accurate pre- and post-operative comparisons.

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Jan 14, 2026

How do surgeons and urologists standardize penis-length measurement before and after procedures (e.g., phalloplasty or weight-loss)?

Surgeons and urologists converge on a small set of reproducible techniques—most commonly bone‑pressed erect length (BPEL) and stretched penile length (SPL)—measured with a rigid ruler pressed to the p...